body {
  color: #b5b5b5;
  font-family: "PingFang SC", "Helvetica Neue", Helvetica, "Microsoft Yahei", "WenQuanYi Micro Hei", Arial, Verdana, sans-serif;
  background-color: #3A4565;
}

.left {
  float: left;
}

.right {
  float: right;
}

.clear-fix {
  clear: both;
}

.line {
  border-bottom: 1px solid #ececec;
}

.panel {
  width: 600px;
  margin: auto;
}
.panel--title {
  color: #3A4565;
  font-size: 20px;
  font-weight: 400;
  text-align: left;
  padding: 30px 0px 20px 25px;
}
.panel--wrapper {
  width: 100%;
  float: left;
  position: relative;
}
.panel--box {
  width: 50%;
  float: left;
  z-index: 1;
  position: absolute;
  border-radius: 4px;
  transition: all 0.5s;
  opacity: 0.1;
  margin-top: 40px;
  background-color: #ffffff;
}
.panel--box.active {
  z-index: 2;
  opacity: 1;
}
.panel--box:first-child {
  left: 0;
  transform: translateX(30%) scale(0.8);
  -webkit-animation: box-1--out 0.5s;
          animation: box-1--out 0.5s;
  transform-origin: center right;
}
.panel--box:first-child.active {
  transform: translateX(35%);
  -webkit-animation: box-1 0.5s;
          animation: box-1 0.5s;
}
.panel--box:last-child {
  right: 0;
  transform: translateX(-30%) scale(0.8);
  -webkit-animation: box-2--out 0.5s;
          animation: box-2--out 0.5s;
  transform-origin: center left;
}
.panel--box:last-child.active {
  -webkit-animation: box-2 0.5s;
          animation: box-2 0.5s;
  transform: translateX(-35%);
}

.sign--input {
  border-left: 5px solid transparent;
  transition: all 0.3s linear;
}
.sign--input:hover {
  background: #F0F0F0;
  border-left: 5px solid #6172a4;
}
.sign--input input {
  width: 290px;
  padding: 20px 0px;
  background: transparent;
  border: 0;
  outline: none;
  color: #222;
  margin: 0 auto;
  text-indent: 20px;
  font-weight: bold;
}
.sign--input input::-webkit-input-placeholder {
  color: #777;
  font-weight: bold;
}
.sign--checkbox {
  padding: 30px 0px;
  font-size: 12px;
  text-indent: 20px;
  line-height: 15px;
  margin-left: 25px;
  display: inline-block;
}
.sign--checkbox input {
  display: none;
}
.sign--checkbox label {
  display: block;
  position: absolute;
  margin-top: 2px;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  content: "";
  transition: all 0.5s ease-in-out;
  cursor: pointer;
  border: 3px solid white;
  box-shadow: 0px 0px 0px 2px #ccc;
}
.sign--checkbox input:checked ~ label {
  background: #3A4565;
  border: 3px solid white;
  box-shadow: 0px 0px 0px 2px #3A4565;
}
.sign--button {
  background-color: #3A4565;
  border: 0;
  height: 30px;
  border-radius: 3px;
  color: white;
  font-weight: bold;
  padding: 0px 25px;
  cursor: pointer;
  transition: background 0.3s ease-in-out;
  margin: 23px 20px 0 50px;
}
.sign--button:hover {
  background: #272f45;
}
.sign--button--outline {
  background-color: transparent;
  border: 1px solid #3A4565;
  color: #3A4565;
}
.sign--button--outline:hover {
  background-color: transparent;
  border: 1px solid #272f45;
  color: #272f45;
}
.sign__forgot {
  margin-top: 25px;
  display: block;
  font-size: 13px;
  text-align: left;
  font-weight: bold;
  color: #b5b5b5;
  padding: 0px 0px 25px 25px;
}
.sign__forgot h3 {
  font-size: 16px;
  font-weight: normal;
  margin-bottom: 15px;
}
.sign__forgot a {
  color: #777;
}
.sign--link {
  width: 32px;
  height: 32px;
  display: block;
  border-radius: 0 3px 3px 0;
  position: absolute;
  right: -52px;
  background: #E68C51;
  cursor: pointer;
  border-right: none;
  top: 35px;
  line-height: 32px;
  color: #fff;
  padding: 0 10px 0px 10px;
  font-size: 14px;
  text-decoration: none;
}
.sign--link:hover {
  background: #e06f24;
  transition: all 0.2s linear;
}
.signup__link {
  width: 64px;
  left: -84px;
  right: auto;
  border-radius: 3px 0 0 3px;
  text-align: center;
}
.signup__title {
  text-align: right;
  padding: 30px 25px 20px 0px;
}
.signup__button {
  margin: 20px;
}

@-webkit-keyframes box-1 {
  0% {
    transform: translateX(30%) scale(0.8);
    z-index: 1;
  }
  49% {
    transform: translateX(0) scale(0.9);
    z-index: 1;
  }
  50% {
    transform: translateX(0) scale(0.9);
    z-index: 2;
  }
  100% {
    transform: translateX(35%) scale(1);
    z-index: 2;
  }
}

@keyframes box-1 {
  0% {
    transform: translateX(30%) scale(0.8);
    z-index: 1;
  }
  49% {
    transform: translateX(0) scale(0.9);
    z-index: 1;
  }
  50% {
    transform: translateX(0) scale(0.9);
    z-index: 2;
  }
  100% {
    transform: translateX(35%) scale(1);
    z-index: 2;
  }
}
@-webkit-keyframes box-1--out {
  0% {
    transform: translateX(35%) scale(1);
    z-index: 2;
  }
  49% {
    transform: translateX(0) scale(0.9);
    z-index: 2;
  }
  50% {
    transform: translateX(0) scale(0.9);
    z-index: 1;
  }
  100% {
    transform: translateX(30%) scale(0.8);
    z-index: 1;
  }
}
@keyframes box-1--out {
  0% {
    transform: translateX(35%) scale(1);
    z-index: 2;
  }
  49% {
    transform: translateX(0) scale(0.9);
    z-index: 2;
  }
  50% {
    transform: translateX(0) scale(0.9);
    z-index: 1;
  }
  100% {
    transform: translateX(30%) scale(0.8);
    z-index: 1;
  }
}
@-webkit-keyframes box-2 {
  0% {
    transform: translateX(-30%) scale(0.8);
    z-index: 1;
  }
  49% {
    transform: translateX(0) scale(0.9);
    z-index: 1;
  }
  50% {
    transform: translateX(0) scale(0.9);
    z-index: 2;
  }
  100% {
    transform: translateX(-35%) scale(1);
    z-index: 2;
  }
}
@keyframes box-2 {
  0% {
    transform: translateX(-30%) scale(0.8);
    z-index: 1;
  }
  49% {
    transform: translateX(0) scale(0.9);
    z-index: 1;
  }
  50% {
    transform: translateX(0) scale(0.9);
    z-index: 2;
  }
  100% {
    transform: translateX(-35%) scale(1);
    z-index: 2;
  }
}
@-webkit-keyframes box-2--out {
  0% {
    transform: translateX(-35%) scale(1);
    z-index: 2;
  }
  49% {
    transform: translateX(0) scale(0.9);
    z-index: 2;
  }
  50% {
    transform: translateX(0) scale(0.9);
    z-index: 1;
  }
  100% {
    transform: translateX(-30%) scale(0.8);
    z-index: 1;
  }
}
@keyframes box-2--out {
  0% {
    transform: translateX(-35%) scale(1);
    z-index: 2;
  }
  49% {
    transform: translateX(0) scale(0.9);
    z-index: 2;
  }
  50% {
    transform: translateX(0) scale(0.9);
    z-index: 1;
  }
  100% {
    transform: translateX(-30%) scale(0.8);
    z-index: 1;
  }
}